My experience contrasts with yours entirely. Runs smooth and from what I can see everything works.
I assume you are just trying to scare others because imo there has most definetly been worse betas.
Nope, not trying to scare others. I'm a registered developer and have been since iOS 4, and watchOS 2 beta 1 is one of the buggier releases I've seen come out of Apple - and there have been some doozies.
Not trying to needlessly scare people off. Trying to warn them based on my experience. The choice is, of course, theirs.